771451564391 has 2 divisors, whose sum is σ = 771451564392. Its totient is φ = 771451564390.

The previous prime is 771451564343. The next prime is 771451564393. The reversal of 771451564391 is 193465154177.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-771451564391 is a prime.

Together with 771451564393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (771451564393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385725782195 + 385725782196.

It is an arithmetic number, because the mean of its divisors is an integer number (385725782196).

Almost surely, 2^771451564391 is an apocalyptic number.

771451564391 is a deficient number, since it is larger than the sum of its proper divisors (1).

771451564391 is an equidigital number, since it uses as much as digits as its factorization.

771451564391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3175200, while the sum is 53.

The spelling of 771451564391 in words is "seven hundred seventy-one billion, four hundred fifty-one million, five hundred sixty-four thousand, three hundred ninety-one".